update nav links

Author: tladendo

app/sitemap/sitemap.jade

@@ -7,11 +7,11 @@
 
       ul
         li 
-          a(href="/challenges/design/active") Design Challenges
+          a(href="/challenges/#&tracks=develop&mode=6&name=All%20Challenges") Design Challenges
         li  
-          a(href="/challenges/develop/active") Development Challenges
+          a(href="/challenges/#&tracks=design&mode=6&name=All%20Challenges") Development Challenges
         li 
-          a(href="/challenges/data/active") Data Science Challenges
+          a(href="/challenges/#&tracks=datasci&mode=6&name=All%20Challenges") Data Science Challenges
         li 
           a(href="//arena.topcoder.com/") Single Round Matches